title: Morphologically robust NiFe2O4 nanofibers as high capacity Li-ion battery anode material.
abstract: In this work, the electrochemical performance of NiFe2O4 nanofibers synthesized by an electrospinning approach have been discussed in detail. Lithium storage properties of nanofibers are evaluated and compared with NiFe2O4 nanoparticles by galvanostatic cycling and cyclic voltammetry studies, both in half-cell configurations. Nanofibers exhibit a higher charge-storage capacity of 1000 mAh g(-1) even after 100 cycles with high Coulmbic efficiency of 100% between 10 and 100 cycles. Ex situ microscopy studies confirmed that cycled nanofiber electrodes maintained the morphology and remained intact even after 100 charge-discharge cycles. The NiFe2O4 nanofiber electrode does not experience any structural stress and eventual pulverisation during lithium cycling and hence provides an efficient electron conducting pathway. The excellent electrochemical performance of NiFe2O4 nanofibers is due to the unique porous morphology of continuous nanofibers.
authors.affiliation: Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117551.
authors.forename: Christie Thomas
authors.initials: CT
authors.lastname: Cherian
authors.forename: Jayaraman
authors.initials: J
authors.lastname: Sundaramurthy
authors.forename: M V
authors.initials: MV
authors.lastname: Reddy
authors.forename: Palanisamy
authors.initials: P
authors.lastname: Suresh Kumar
authors.forename: Kalaivani
authors.initials: K
authors.lastname: Mani
authors.forename: Damian
authors.initials: D
authors.lastname: Pliszka
authors.forename: Chorng Haur
authors.initials: CH
authors.lastname: Sow
authors.forename: Seeram
authors.initials: S
authors.lastname: Ramakrishna
authors.forename: B V R
authors.initials: BV
authors.lastname: Chowdari
mesh_terms: D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D011205:Povidone / Q000737:chemistry; D013696:Temperature
chemical_list: D005290:Ferric Compounds; D007477:Ions; C550717:nickel ferrite; D009532:Nickel; D008094:Lithium; D011205:Povidone